CN114991172A - Template and steel bar integrated underwater pouring structure and construction method thereof - Google Patents
Template and steel bar integrated underwater pouring structure and construction method thereof Download PDFInfo
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- CN114991172A CN114991172A CN202210694816.3A CN202210694816A CN114991172A CN 114991172 A CN114991172 A CN 114991172A CN 202210694816 A CN202210694816 A CN 202210694816A CN 114991172 A CN114991172 A CN 114991172A
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- well wall
- reinforcement cage
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 53
- 239000010959 steel Substances 0.000 title claims abstract description 53
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 230000002787 reinforcement Effects 0.000 claims abstract description 66
- 239000004567 concrete Substances 0.000 claims abstract description 32
- 239000011178 precast concrete Substances 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 11
- 238000009415 formwork Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- 210000002105 tongue Anatomy 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 3
- 238000007667 floating Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a template and steel bar integrated underwater pouring structure and a construction method thereof, and relates to the technical field of well wall construction. The prefabricated concrete slab and the well wall steel reinforcement cage are connected into a whole, cast-in-place concrete is poured in the well wall steel reinforcement cage, and the cast-in-place concrete and the prefabricated concrete slab form a well wall structure together. The construction method has simple and convenient steps, integrates the advantages of cast-in-place and prefabricated structures, has high structural strength and high construction speed, is internally provided with a sensing network, monitors the construction state in real time, has high safety, and is suitable for underground or underwater casting.
Description
Technical Field
The invention relates to the technical field of well wall construction, in particular to a template and steel bar integrated underwater pouring structure and a construction method thereof.
Background
With the continuous development of shaft construction technology, more and more shaft construction methods are proposed, wherein a plurality of shaft constructions adopt shaft drilling method for tunneling construction, the shaft wall is formed by prefabricating reinforced concrete and steel structures into the shaft wall and then assembling the shaft wall, and at present, the shaft construction is mainly constructed in a floating and sinking mode in China. The hoisting equipment required by the method for building the structure has stronger hoisting capacity, the length of a single section of well wall is limited, the difficulty in positioning due to excessive splicing parts is higher, gaps are easy to appear in the built structure, and a wall thickness grouting process is required to be added for preventing water seepage of the well wall, so that the time required by site construction is longer, and the safety risk of construction is increased.
On the other hand, the concrete structure cast by the on-site formwork is good in structural integrity, but links of demoulding and sliding are required to be added, so that the engineering safety risk is increased, and in addition, the surface treatment is required to be carried out on the well wall due to the concrete casting quality, so that the construction period is prolonged, and meanwhile, the engineering safety risk is also increased.
How to provide a template and steel bar integrated underwater pouring structure and a construction method thereof becomes a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention mainly aims to provide a template and steel bar integrated underwater pouring structure and a construction method thereof, and aims to solve the problems.
The invention provides a template and steel bar integrated underwater pouring structure which comprises a well wall steel reinforcement cage and a plurality of precast concrete plates, wherein outward extending steel bars are reserved on the precast concrete plates, bellmouths and tongues are reserved on the left side and the right side of each precast plate, the upper part and the lower part of each precast plate are reserved with the tongues, the precast concrete plates are spliced through the tongues, the precast concrete plates and the well wall steel reinforcement cage are connected into a whole, cast-in-place concrete is poured in the well wall steel reinforcement cage, and the cast-in-place concrete and the precast concrete plates form the well wall structure together.
Furthermore, the joints of the precast concrete plates spliced by the tongue-and-groove joints or the bolts are filled with cementing materials.
Furthermore, the well wall reinforcement cage comprises transverse reinforcements and longitudinal reinforcements, the transverse reinforcements and the longitudinal reinforcements are arranged in a staggered mode, and the overhanging reinforcements and the transverse reinforcements of the precast concrete slab are connected into a whole through fasteners or welding and then connected with the longitudinal reinforcements.
Furthermore, a plurality of sensors are distributed in the well wall reinforcement cage, and the sensors are connected through sensing cables to form a sensing network.
A construction method of a template and steel bar integrated underwater pouring structure comprises the following steps:
drilling to form a well, and protecting the wall with slurry in the well;
prefabricating concrete slabs in a factory;
splicing precast concrete plates;
manufacturing a well wall reinforcement cage, wherein the transverse reinforcement is connected with the prefabricated concrete slab reserved overhanging reinforcement through a fastener or welding, and then is connected with the longitudinal reinforcement, so that the well wall reinforcement cage and the prefabricated concrete slab form a prefabricated concrete slab reinforcement cage integrated structure;
hoisting the precast concrete slab reinforcement cage integrated structure into a well;
the integral structure of the internode precast concrete slab reinforcement cage is spliced by the balance force required by splicing provided by buoyancy supply equipment and hoisting equipment;
and (5) pouring concrete in the well wall reinforcement cage, and maintaining to finish the construction of the well wall structure.
Further, the method for splicing the precast concrete plate comprises the following steps: the left side and the right side of the precast slab are reserved with sockets and grooves, the upper side and the lower side of the precast slab are both reserved with the bearing grooves, and all precast concrete slabs are spliced through the bearing grooves.
Further, splicing the precast concrete plates through tongue-and-groove joints further comprises:
and filling a cementing material as a filler at the joint.
Further, still include before the overhanging steel bar connection is reserved to the horizontal reinforcing bar of wall of a well steel reinforcement cage and prefabricated plate:
a plurality of sensors and sensing cables are arranged in the well wall reinforcement cage, and the sensors are connected through the sensing cables to form a sensing network.
The invention has the beneficial effects that:
(1) and a closed pouring environment is formed, the influence of surrounding stratums is reduced, and the underwater pouring quality is improved.
(2) Compared with a completely cast-in-place structure, the construction method saves the links of demoulding and sliding, does not need surface treatment, and improves the construction speed.
(3) The precast concrete structure and the cast-in-place concrete are integrated, so that the structural strength is improved.
(4) Compare with the pure prefabricated wall of a well, the seam is few, reduces the infiltration problem of pure prefab, and under the same volume, its quality is far less than pure prefabricated component, under the equal hoist and mount ability, can increase by a wide margin and assemble the structure size, and then increase the wall of a well structural integrity, improve structural safety.
(5) The built-in sensor of main part steel reinforcement cage monitors structural state in real time, reduces construction and later stage safe in utilization risk.
Drawings
FIG. 1 is a schematic top view of the overall structure of a single-module board of the present invention;
FIG. 2 is a cross-sectional view of a single-template well wall according to the present invention;
FIG. 3 is a schematic diagram of a key structure of a part of the prefabricated panel in FIG. 1;
FIG. 4 is a schematic top view of the overall structure of the dual template of the present invention.
The concrete slab comprises 1 precast concrete slab, 2 well wall reinforcement cage, 3 well wall rock soil body, 4 cementing material, 5 longitudinal reinforcement, 6 transverse reinforcement, 7 sensor, 8 sensing cable, 9 overhanging reinforcement, 10 socket, 11 tongue-and-groove, 12 socket tongue-and-groove.
Detailed Description
To achieve the above objects and advantages, the present invention provides a technical means and a structure thereof, which are described in detail with reference to the accompanying drawings.
Aiming at the defects of the existing construction method, the invention provides an underwater pouring structure with no need of surface treatment, no need of demoulding, high construction speed and integration of a template and a reinforcing steel bar and a construction method thereof.
Example 1
As shown in fig. 1-4, the invention provides a template and steel bar integrated underwater pouring structure, which comprises a well wall steel reinforcement cage 2 and a plurality of precast concrete plates 1, wherein a plurality of precast concrete plates 1 are provided with outward extending steel bars 9, and are conveniently connected with the well wall steel reinforcement cage 2, sockets 10 and tongue-and-grooves 11 are reserved on the left side and the right side of each precast concrete plate, the upper side and the lower side of each precast concrete plate are provided with the tongue-and-groove 12, the precast concrete plates 1 are spliced through the tongue-and-groove 12, the precast concrete plates 1 are connected with the well wall steel reinforcement cage 2 into a whole, concrete is cast in situ in the well wall steel reinforcement cage 2, and the cast-in-situ concrete and the precast concrete plates 1 form a well wall structure together.
Referring to fig. 1, when the extrawell rock mass 3 is a stable stratum, it can be directly used as an outer-layer template, the precast concrete slab 1 is an inner-layer template, the extrawell rock mass 3 is a stable stratum, it can be directly used as an outer-layer template, and it forms an inner and outer template of the well wall together with the precast concrete slab 1; referring to fig. 4, when the rock mass body 3 outside the well is unstable ground such as quicksand and soft soil, the precast concrete slab 1 is used as an inner and outer formwork, that is, the precast concrete slab 1 is also arranged outside as a casting formwork.
In the embodiment, in order to ensure the waterproof performance of the structure, the joints of the precast concrete plates 1 spliced by the tongue-and-groove joints 12 or the bolts are filled with the cementing materials 4.
In this embodiment, wall of a well steel reinforcement cage 2 includes horizontal reinforcing bar 6 and longitudinal reinforcement 5, horizontal reinforcing bar 6 with longitudinal reinforcement 5 staggered arrangement, prefabricated concrete slab 1's overhanging reinforcing bar 9 and horizontal reinforcing bar 6 pass through the fastener or welded connection as an organic whole after, are connected with longitudinal reinforcement 5 again.
In this embodiment, lay a plurality of sensors 7 in the wall of a well steel reinforcement cage 2, a plurality of sensors 7 form sensor network after 8 links to each other through sensing cable to the detection and the long-term monitoring of each item parameter of later stage structure are convenient for.
Example 2
The invention also provides a construction method of the template and steel bar integrated underwater pouring structure, which comprises the following steps:
carrying out well forming operation according to a conventional drilling method, and injecting slurry into the well forming operation to protect the wall;
prefabricating a concrete template in a factory, and reserving an overhanging steel bar 9 in the process;
splicing the precast concrete plates 1 in a construction site, wherein bolt holes are reserved beside the supporting tongue and groove 12 according to working conditions of circumferential splicing and longitudinal splicing, and both longitudinal splicing and circumferential splicing, and are connected and reinforced by bolts;
a plurality of sensors 7 and sensing cables 8 are distributed in the well wall reinforcement cage 2, and the sensors 7 are connected through the sensing cables 8 to form a sensing network;
the well wall reinforcement cage 2 is manufactured, and the transverse reinforcement 6 is connected with the prefabricated concrete plate 1 reserved overhanging reinforcement 9 through a fastener or welding and then connected with the longitudinal reinforcement 5, so that the well wall reinforcement cage 2 and the prefabricated concrete plate 1 form a reinforcement cage integrated structure of the prefabricated concrete plate 1;
the seam between the adjacent precast concrete plates 1 is processed, and bolts are additionally arranged between the two adjacent precast concrete plates for fastening in the longitudinal splicing mode;
the single-time assembling height can be reasonably planned according to the construction requirement and the site construction condition;
hoisting the precast concrete slab 1 reinforcement cage integrated structure to a preset position beside a well, wherein hoisting equipment comprises but is not limited to a crane, a gantry crane and the like;
before the structure is constructed, a floating ball is arranged on a structure internal mold and is inflated, the buoyancy force borne by the structure is controlled by controlling the gas pressure inside the floating ball, the fact that the lowered structure part of the front section is exposed out of the water surface is guaranteed, and convenience is brought to connection between the rear section;
and (3) hoisting the single-layer structure layer by layer during construction, wherein the height of the single-layer structure is determined according to the building use requirement and the field construction condition. Assembling a single-layer structure on a special platform near a middle drilling well in a construction site; a floating ball is arranged in the assembled single-layer integrated structure;
hoisting the precast concrete slabs 1 to preset positions in the well through hoisting equipment, and connecting the two layers of precast concrete slabs 1 and the reinforcement cage into an integral structure through the tongue-and-groove 12 and a reinforcement fastener or welding connection;
in the construction process, the lower part is assembled section by matching the hoisting equipment and the floating ball; the front section of integrated structure is acted by the floating ball and the buoyancy of the front section of integrated structure, the upper end of the integrated structure is required to be connected, part of the integrated structure floats out of the water surface, the rear section of integrated structure is spliced with the front section of integrated structure through hoisting equipment, the operation below the spliced whole structure is finished in the same way, and during the process, the posture control is finished mainly by the buoyancy of the floating ball and the tension of the hoisting equipment;
concrete is poured behind the inner template, the slurry behind the inner template is replaced, the data (the change of various parameters such as temperature, stress and the like) of the sensor 7 are monitored in real time in the process, and the slurry behind the inner template is replaced with the slurry with the pouring quality; maintaining the structure, and continuously monitoring the change of each parameter of the structure;
after the maintenance is finished, the precast concrete plate 1, the well wall reinforcement cage 2 and later-stage pouring concrete form a shaft well wall structure together.
In this embodiment, the method for splicing the precast concrete slabs 1 includes: the left side and the right side of each precast slab are reserved with sockets 10 and grooves 11, the upper side and the lower side of each precast slab are reserved with grooves 12, and the precast concrete slabs 1 are spliced through the grooves 12.
In this embodiment, the splicing of the precast concrete slabs 1 by the tongue-and-groove joints 12 further includes:
the joint is filled with a cementitious material 4 as a filler.
The invention can form a closed pouring environment, reduce the influence of surrounding stratums and improve the underwater pouring quality. Compared with a completely cast-in-place structure, the construction method saves the links of demoulding and sliding, does not need surface treatment, and improves the construction speed. The precast concrete structure and the cast-in-place concrete are integrated, so that the structural strength is improved. Compared with a pure prefabricated well wall, the joint is few, the water seepage problem of the pure prefabricated member is reduced, the quality of the prefabricated well wall is far smaller than that of a pure prefabricated member under the same volume, and the assembled structure size can be greatly increased under the same hoisting capacity, so that the structural integrity of the well wall is increased, and the structural safety is improved. The built-in sensor of main part steel reinforcement cage monitors structural state in real time, reduces construction and later stage safe in utilization risk.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (8)
1. The template and steel bar integrated underwater pouring structure is characterized by comprising a well wall steel reinforcement cage and a plurality of precast concrete plates, wherein overhanging steel bars are reserved on the precast concrete plates, bellmouths and grooves are reserved on the left side and the right side of each precast plate, the upper ends and the lower ends of the precast plates are reserved with the bearing grooves, the precast concrete plates are spliced through the bearing grooves, the precast concrete plates and the well wall steel reinforcement cage are connected into a whole, cast-in-place concrete is poured in the well wall steel reinforcement cage, and the cast-in-place concrete and the precast concrete plates form the well wall structure together.
2. The formwork and steel bar integrated underwater pouring structure of claim 1, wherein joints of a plurality of precast concrete plates spliced by adopting support tongues or bolts are filled with cementing materials.
3. The template and steel bar integrated underwater pouring structure of claim 1, wherein the well wall steel bar cage comprises transverse steel bars and longitudinal steel bars, the transverse steel bars and the longitudinal steel bars are arranged in a staggered manner, and the overhanging steel bars of the precast concrete plate are connected with the longitudinal steel bars after being connected with the transverse steel bars into a whole through fasteners or welding.
4. The formwork and steel bar integrated underwater pouring structure as claimed in claim 1, wherein a plurality of sensors are distributed in the well wall steel reinforcement cage, and the plurality of sensors are connected through sensing cables to form a sensing network.
5. The construction method of the formwork and steel bar integrated underwater pouring structure of claim 1, which is characterized by comprising the following steps:
drilling to form a well, and protecting the wall with slurry in the well;
prefabricating a concrete slab in a factory;
splicing precast concrete plates;
manufacturing a well wall reinforcement cage, wherein the transverse reinforcement is connected with the prefabricated concrete slab reserved overhanging reinforcement through a fastener or welding, and then is connected with the longitudinal reinforcement, so that the well wall reinforcement cage and the prefabricated concrete slab form a prefabricated concrete slab reinforcement cage integrated structure;
hoisting the precast concrete slab reinforcement cage integrated structure into a well;
the integral structure of the internode precast concrete slab reinforcement cage is spliced by means of the buoyancy supply equipment and the hoisting equipment to provide balance force;
and (5) pouring concrete in the well wall reinforcement cage, and maintaining to finish the construction of the well wall structure.
6. The construction method of the formwork and steel bar integrated underwater pouring structure of claim 5, wherein the method for splicing the precast concrete slab comprises the following steps: the left side and the right side of the precast slab are reserved with sockets and grooves, the upper side and the lower side of the precast slab are both reserved with the bearing grooves, and all precast concrete slabs are spliced through the bearing grooves.
7. The construction method of the template and steel bar integrated underwater pouring structure of claim 6, wherein the splicing of the precast concrete slabs through the tongue-and-groove joints further comprises:
and filling a cementing material as a filler at the joint.
8. The construction method of the template and steel bar integrated underwater pouring structure as claimed in claim 5, wherein before the connection of the horizontal steel bars of the well wall steel reinforcement cage and the reserved overhanging steel bars of the precast slabs, the construction method further comprises the following steps:
a plurality of sensors and sensing cables are distributed in the well wall reinforcement cage, and the sensors are connected through the sensing cables to form a sensing network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210694816.3A CN114991172A (en) | 2022-06-20 | 2022-06-20 | Template and steel bar integrated underwater pouring structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210694816.3A CN114991172A (en) | 2022-06-20 | 2022-06-20 | Template and steel bar integrated underwater pouring structure and construction method thereof |
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| CN114991172A true CN114991172A (en) | 2022-09-02 |
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| CN202210694816.3A Pending CN114991172A (en) | 2022-06-20 | 2022-06-20 | Template and steel bar integrated underwater pouring structure and construction method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797898A (en) * | 1993-09-28 | 1995-04-11 | Tobishima Corp | Precasted form for tunnel lining |
| JPH0978763A (en) * | 1995-09-18 | 1997-03-25 | Maeda Corp | Work execution method for concrete structure and precast form |
| CN212614713U (en) * | 2020-07-29 | 2021-02-26 | 中铁工程装备集团有限公司 | Wall of a well installation supporting construction |
| WO2021109144A1 (en) * | 2019-12-06 | 2021-06-10 | 邹胜斌 | Modular intelligent dado cast-in-place pile and construction process therefor |
-
2022
- 2022-06-20 CN CN202210694816.3A patent/CN114991172A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797898A (en) * | 1993-09-28 | 1995-04-11 | Tobishima Corp | Precasted form for tunnel lining |
| JPH0978763A (en) * | 1995-09-18 | 1997-03-25 | Maeda Corp | Work execution method for concrete structure and precast form |
| WO2021109144A1 (en) * | 2019-12-06 | 2021-06-10 | 邹胜斌 | Modular intelligent dado cast-in-place pile and construction process therefor |
| CN212614713U (en) * | 2020-07-29 | 2021-02-26 | 中铁工程装备集团有限公司 | Wall of a well installation supporting construction |
Non-Patent Citations (1)
| Title |
|---|
| 沈正芳等: "立井井壁", 《立井井壁》, pages 160 - 162 * |
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